Carbid-feed acetylene-generator.



R. P. ELLIOTT.

CARBID FEED ACETYLENE GENERATOR.

APPLICATION FILED MAY7, 1910.

1,167,986. Patented. Jan. 11, 1916.

COLUMBlA FLANOcR/uu COqWASHINOTON, D. c.

A were st t -mm inc ease .a citizenot the United States, residingin To all whom it may concern.

Be it'known that L RICHA D P. ELLroT'r,

- j Boston; county of Suffolk,commonwealth of nism suitable tor large or stationary carbidl feed acetvlene generators adapted to feed granulated carbid in quantities proport1on-' .ing valve anddevices "IM-as'saehusetts have invented certain new' "and useful,Improvements 1n GarblchFeed- Acetylene-Generators, of which the followlng 1s a specification, reference being had to the drawin s accompanying the same and forming a part thereof.

n n i L My invention relates to carbld-feed acetylene generators, and particularly to thefeedsame. 7 V

The objects of my invention are to produce a pressure-controlled feeding mochaate to the volume of gas drawn from the generator; to prov de a flexible valve and:

a hard or. metallic seat so that when closed they will niake a gas-tight closure to pro V the pressure-controlled mechanism;

tect the feeding valve from the weight of carbid in the carbid-chamber when it is full; to provide means to prevent the carbid from flowing into the water in case of injury to and -for protecting the )ressure-controllec I phragm from contact. with-the carbid, to-

gether with other objects which will be pointed out in the specification.

feeding mechanism, and other mechanisms connected t the carbid-chamber.

p In the drawings accompanying this specification, 1 represents the i erticalwall of the .carbid-chalnber; Qis a casting secured to provided with a recess 21, the cap 21 22 of the casting 2 by screws 23, .23, etc. .The'cap 21 has a screw threaded hole 24:

(feeding screw 25, the upper end of the feed .th'eupper ends at the wall l; 3'is the inclined bottom otthe carbid-chamber; 4 is a VeItlCfl-l portion secured to the outside of the wall 3 at its ling r-end, its lower end being secured to casting 5. The-casting 5 .isjprovided with the threaded portion 6 and a groove 7 inwhichmay be secureda ring of suitable packing for making a gas-tight closure and adapted to be secured to a'suitable water tank. p

The casting of the carbid-chamber is 20 to receive a cap being secured to the portion in its center adapted to receive the threaded CARBIfD-FEED ACETYLENE-GENERATOR.

ingscrew being for controlling the;

-dia- 7 through a flexible disk 39 lnadeot leather or Specification of Letters latent. Pat gntgd J Application filed ivrz 7, 1910. Serial No. 559,955.

handle 26. tion 27 which is ofa diameterto 'i illf the valveseat- Q8. ":The valve-seat 28 is-flared, belng slightly larger indlanieter atith'e-bot- ;toin. The portion 2-7 is provided at its'-lower end withtheportion 29- Which has a downwardly projecting rib 30 'which 'sinksifito the flexibleralve 31 and serves ,to'hold the valve in position against displacement. The

portion 29 is provided with ashouldered" portion 32 and a threaded portion 33 which 1s adapted to have screwed upon it the clamping portion 3a. This clamping portion 8% is prorided'with the raised "ring-'85 adapted to sink into the flexible val e landassist in securingit in po'sition.- The'va lve ,31 hasa round hole in its center in which is inserted a metal sleeve 36 so that the upper end of the sleeve willcontact with the portion 99, and the lower end with the 'vortioii 34. This 1511'] order that the portion as may be screwed firmly nponthe' portion 29 and vlicld' tightly by engaging thesleeve 36} between them; "The portion 34 hole 37 threaded to receive the threaded por tion on' the lower end ot'the valve'steni 2-8. The valve-stem extends" inwardly other suitable material, the holeiin the" disk I, 39 being sniallenoughtotightlv fit'uponltlie valre stein and form a flex'i'ble c'dustproot'closure'. The outeredgesfiof the disk 39' are clamped between the end or the tube 40 and the periphery of a cup-sh'aoedidisk 41; the cup-shaped disk being ot'lthe sfanie diameter as the outside of the tube 4-0.1 :yThe disk 41' and the 'flexiblewasher' 39bei'nglheld 1'irn1ly in place: by the-capfifi, the. inside diameter of which is such as to'fit tightly upon'the outside of the tube" 40. i The valve rod 38 is threaded at its upper end and firmly screwed into the plug 43 which in turn is secured in the spring-tease 44:; The upper end ot-thespring-casehas secured to it a liang'e45 which :is threaded upon its upper end and hasscrewed thereon the-ring i6. Thereis a metal washer .47 under the'ring 46 between whichand the flange is clamped afieXibleYdiaphragm L8. The outer edge of the diaphragm 48 is clamped firmly between the portion 22 of the casting 2 andthe periphery 49 of the cap 21. The diaphragm '48 is inade'ot a flexible stretchable"material, such as rubber,-'

' provided' with a crankhe valve mechanism consists of the'por-- 7 e0 has a small and the edges and the center of the diaphragm are secured to the respective parts hereinbefore enumerated in such manner as to make a gas-tight closure. The cap 21 is provided with air holes 50, 50, so that there will not be a vacuum created in the space between the diaphragm and the top of the cap. The casting 2 has a downwardly projecting cone-shaped portiton'51, which, with the portion 21, forms a chamber in which the diaphragm 48 is secured, which arrangement prevents carbid in the carbid-chamber 52 from coming in contact with the diaphragm. In order that the gas pressure may reach to the under side of the diaphragm, I provide a pipe 53 which is secured in the wall?) at its lower end, and in the wall 51 at its upper end in manner to make a gastight closure. By this arrangement, dust from carbid in the carbid-chamber, or the carbid, cannot come in contact with the diaphragm, yet as as generated by dropping carbid into tie water-tank 8 through the feeding-valve can rise and flow through the pipe 53 to the diaphragm communicating the pressure to the under side of the diaphragm, and when a predetermined pressure has been reached the valve will be pulled upwardly by means of the diaphragm 48, the spring-case 14:, valve-stem 88, and the flexible valve 31 attached to the valve-stem pulled upwardly until its periphery closes the space in the valve-seat 28. Should any thing happen to the diaphragm so that the gas would pass through it, and the pressure not be exerted upon it to pull the valve upwardly, the feeding spring 54 would push the valve-stem downwardly untilthe portion 27 of the valve would close the valve-seat 28 and shut off the flow of carbid.

To protect the valve 31 and portion 27 from the accumulated weight of carbid in the carbid chamber when full, I provide a flaring shelf 55 which is secured to the tube 40 and flares outwardly, leaving an annular space 56 between its edge and the bottom 3 of the carbid-chamber. The tube 40 is secured firmly in the hub 57 which is formed upon the downwardly flaring partition 51.

As the gas is generated, it passes up through a tube 58 secured in the wall 3 of the carbid-chamber, its upper end projecting upwardly into a threaded hole 59 in the casting 2, the hole being larger in diameter than the outside of the tube 58, to provide a gas passage from the top of the tube 58 into the carbid-chamber 52. The threaded hole .59 is closed by the plug 60. The gas passes from the tube 58 into the carbidchamber and down through the carbid, if the chamber is full, to the lower end of the tube 61 and up through a filtering material 62 composed of fibers or felt, or preferably of sheeps wool, thence out through the valve 63 to the supply pipe attached to the valve 63.

The operation of my device is as follows The water-tank is first filled with clean water, and the carbid-chamber filled with car bid. But before the operation of filling the carbid-chamber with carbid is commenced, the feeding-screw 25 should be screwed upwardly to its uppermost position, thereby drawing the flexible portiton of the valve 31 into the seat 28, when thechamber may be filled with carbid,

To start the generation of gas, the feed ing-screw 25 is screwed downwardly, compressing the spring 54;, and through it pushing the spring-case 44, the valve-rod 38, and the valve 31 downwardly, as shown in Fig. 1, so that the carbid can flow outwardly into the water-tank. When the carbid reaches the water-tank and the generation of gas commences, the gas flows through the pipe 53 to the under side of the diaphragm, and if the pressure reaches a point to overcome the tension of the spring 54 the diaphragm pulls the valve 31 upwardly into its seat 28 and shuts oil the flow of carbid. The feeding operation is repeated each time the gas is drawn off, and the pressure of gas in the generator falls below the tension of the spring 54:.

I do not limit myself to the exact form, location or arrangement of the parts as shown in the drawings, as various changes may be made in these respects without departing from the spirit of my invention.

What I claim is 1. In an acetylene generator, a carbidfeed mechanism comprising a carbid chamber and a downward tapering opening in the bottom of the carbid-chamber to form a valve seat; an inclosed chamber formed at the top of the carbid-chamber having a flexible diaphragm located in the middle thereof, the edges of the diaphragm'bemg secured in said inclosed chamber to form a gastight closure; a tube extending downwardly from the inclosed chamber and secured therein with a gas and dust-tight closure; an outwardly and downwardly flaring metal support secured to the lower part of said tube; a cup-shaped guiding washer secured on the lower end of said tubing; a flexible washer secured to the lower end of said tube having a hole therethrough 'to receive a valve rod; said valve rod; a spring-casing secured to the upper end of said valve r od, the upper end of said spring-casing being secured in the center of the diaphragm with moved downwardly into said valve seat; a compressible spring mounted in the springcasing; a screw threaded into the top of the carbidchamber and arranged to press against the top of the compressible spring; means for turning the screw downwardly against the end of the spring to compress it so as to move the valve downward away from the valve seat; and a passage from the space below the bottom of the carbid-chamher to the inclosed chamber in which the diaphragm is located so that gas pressure in the generator can be communicated therethrough to the. under side of the diaphragm.

2. In an acetylene generator, a water-tank and a carbid-chamber; a cylindrical opening in the bottom of the carbid-chamber through which the carbid is fed to the water; a flexible valve for closing said opening; a fixed flaring shelf in said carbid-chamber for partially supporting the weight of the carbid, located just above the valve seat in the bottom of the carbid-chamber; a compressible spring for opening the valve; a pressurecontrolled diaphragm for closing the valve; a diaphragm chamber in which said diaphragm is mounted having a dust and gastight wall between it and the carbid cham her; a passage communicating with the gas space in the generator and the underside of the diaphragm; a tube through which the gas can flow from the water-tank to the top of the carbid-chamber; and an outlet from the carbid-chamber having a fibrous filtering material located therein.

In testimony whereof, I have hereunto set my hand, in the presence of two subscribing witnesses, this the 5th day of May, A. D. 1910.

RICHARD P. ELLIOTT.

Vitnesses:

CLARENCE P. WESTON, H. M. KELSO.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

